JPH0245435U - - Google Patents
Info
- Publication number
- JPH0245435U JPH0245435U JP12453288U JP12453288U JPH0245435U JP H0245435 U JPH0245435 U JP H0245435U JP 12453288 U JP12453288 U JP 12453288U JP 12453288 U JP12453288 U JP 12453288U JP H0245435 U JPH0245435 U JP H0245435U
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- output
- measured
- photodetector
- fabry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Lasers (AREA)
Description
第１図は本考案に係るレーザ周波数計の第１の
実施例を示す構成ブロツク図、第２図および第３
図は第１図装置の動作を示す説明図、第４図は本
考案に係るレーザ周波数計の第２の実施例を示す
構成ブロツク図、第５図は本考案に係るレーザ周
波数計の第３の実施例を示す構成ブロツク図、第
６図および第７図は従来のレーザ周波数計を示す
原理図である。
１…参照レーザ、２，７…ビームスプリツタ、
３，５…レンズ、４…シングルモードフアイバ、
６…フアブリ・ペロー・エタロン、８…第１の光
検出器、９…第２の光検出器、１０…周波数演算
回路、１２…フアイバカプラ、１３，１５…偏光
ビームスプリツタ、１４…定偏波フアイバ、６３
…掃引手段。
FIG. 1 is a block diagram showing a first embodiment of the laser frequency meter according to the present invention, and FIGS.
1 is an explanatory diagram showing the operation of the device, FIG. 4 is a configuration block diagram showing a second embodiment of the laser frequency meter according to the present invention, and FIG. 5 is a third embodiment of the laser frequency meter according to the present invention. 6 and 7 are principle diagrams showing a conventional laser frequency meter. 1... Reference laser, 2, 7... Beam splitter,
3, 5...Lens, 4...Single mode fiber,
6...Fabry-Perot etalon, 8...first photodetector, 9...second photodetector, 10...frequency calculation circuit, 12...fiber coupler, 13, 15...polarizing beam splitter, 14...constant polarization wave fiber, 63
...Sweeping means.
Claims (1)
ーザから出力される参照レーザ光と被測定レーザ
光とを合波するフアイバ出力の合波手段と、この
合波手段の出力光を平行光にするレンズと、この
レンズの出力光を入射するフアブリ・ペロー・エ
タロンと、このフアブリ・ペロー・エタロンを透
過する光を前記被測定レーザ光と前記参照レーザ
光の２つに分離する分離手段と、この分離手段か
ら出力される前記被測定レーザ光を検出する第１
の光検出器と、前記分離手段から出力される前記
参照レーザ光を検出する第２の光検出器と、前記
フアブリ・ペロー・エタロンのミラー間隔を変化
させる掃引手段と、この掃引手段によりミラー間
隔が変化したときの第１の光検出器出力と第２の
光検出器出力に基づいて被測定レーザ光の周波数
を演算する周波数演算回路とを備えたことを特徴
とするレーザ周波数計。 A reference laser with a known oscillation frequency, a fiber output combining means for combining the reference laser beam output from the reference laser and the measured laser beam, and a lens that converts the output light of the combining means into parallel light. a Fabry-Perot etalon into which the output light of the lens is incident; a separation means for separating the light transmitted through the Fabry-Perot etalon into two, the laser beam to be measured and the reference laser beam; a first detecting the laser beam to be measured outputted from the means;
a second photodetector for detecting the reference laser beam outputted from the separating means; a sweeping means for changing the mirror spacing of the Fabry-Perot etalon; 1. A laser frequency meter comprising: a frequency calculation circuit that calculates the frequency of a laser beam to be measured based on the output of the first photodetector and the output of the second photodetector when .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12453288U JPH0245435U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12453288U JPH0245435U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0245435U true JPH0245435U (en) | 1990-03-28 |
Family
ID=31374349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12453288U Pending JPH0245435U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0245435U (en) |
-
1988
- 1988-09-22 JP JP12453288U patent/JPH0245435U/ja active Pending
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